Simulated infrared and Raman spectroscopy, complex dielectric function and refractive index dataset of monoclinic C 2/ m stoichiometric clinochlore Mg6Si4O10(OH)8 as obtained from Density Functional Theory

Data Brief. 2020 Aug 22:32:106208. doi: 10.1016/j.dib.2020.106208. eCollection 2020 Oct.

Abstract

This article reports a simulated dataset of the vibrational (infrared and Raman) and optical properties (complex dielectric function and refractive index) of clinochlore, an important mineral belonging to the phyllosilicate family [1]. The data here reported were calculated from ab initio Density Functional Theory (DFT) simulations at B3LYP level, including a correction for the dispersive forces (B3LYP-D* approach) and all-electron Gaussian-type orbitals basis sets. This dataset was calculated between 0 cm-1 and 4000 cm-1 and comprises infrared, reflectance and Raman spectra, frequency-dependent complex dielectric function and complex refractive index of clinochlore. The data was validated against available experimental spectroscopic results reported in literature and can be of help in several application fields, for instance fundamental georesource exploration and exploitation, in applied mineralogy, geology, material science, and as a reference to assess the quality of other theoretical approaches.

Keywords: Clinochlore; Complex refractive index; DFT; Dielectric function; Georesources; Infrared spectroscopy; Phyllosilicates; Raman spectroscopy.